JPH0138151Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an operating tool for an electric chain block, and more particularly, to an operating tool for an electric chain block that controls the operation of a drive motor for a load sheave.

(Prior art) Generally, for this type of electric chain block,
A lower hook is suspended from a chain block body including a load sheave and a drive motor for the load sheave through the load chain, while an operating tool for an operation switch for controlling the operation of the drive motor is attached from the chain block body. The lower hook is suspended via a cord, and the motor is driven in forward and reverse directions by operating an operating switch of the operating tool, and the lower hook is hoisted up and lowered in response to this forward and reverse drive.

(Problems to be Solved by the Invention) By the way, in the operating tool for such an electric chain block, since the lower hook block and the operating tool are separately suspended from the chain block body, when operating the It is necessary to hold the operating tool in one or both hands and operate the operating switch. Therefore, for example, when assembling the upper mold into the lower mold using the chain block, it is difficult to work alone. There is a problem in that it is not possible to hold the upper mold and the lower hook using both hands and guide the upper mold to fit well with the lower mold while preventing the upper mold from moving laterally or shaking. This requires a person to operate the operating switch and a person to guide the upper mold to the lower mold, and requires a plurality of hands.

The present invention forms an operating tool having an operating switch that controls the operation of the drive motor and an operating handle that controls the lateral movement of the lower hook, and allows the operating tool to be directly attached to an existing electric chain block.
The operation switch can be operated while holding the lower hook, thereby solving the above-mentioned problem that occurs when one person carries out loading and unloading work.

(Means for Solving the Problems) The present invention includes a chain block body including a load sheave and a drive motor for driving the load sheave, a load chain suspended on the load sheave, and a An operating tool for controlling the operation of the drive motor in an electric chain block consisting of a lower hook block having a lower hook attached to the lower end, which is divided along the length direction of the load chain, and the divided surfaces are joined together. made possible 1
A main body of the operating tool is formed, which is composed of a pair of divided block pieces, and each of the divided block pieces with the above-mentioned split surfaces joined is separably joined by a connecting means, and one of the divided block pieces in the main body of the operating tool is formed. an operation switch for controlling the operation of the drive motor, and a position remote from the operation switch;
An operating handle for controlling the lateral movement of the lower hook is provided, and each split surface of each of the block pieces is provided with an operation handle for controlling the lateral movement of the lower hook.
A semicircular through hole opening outward and an engaging recess communicating with these through holes are provided, and the engaging recess holds the lower hook block when the block pieces are combined. It is characterized by forming a section.

(Function) Therefore, when loading and unloading using an electric chain block, the operating handle of the operating tool body is grasped to control the lateral movement and swing of the lower hook, and the operating switch is operated. This allows one person to operate the operation switch and guide the cargo to the desired position with both hands.Furthermore, when the block pieces are connected, there is a
Since the engaging portions that hold both the lower hooks can be formed, when the operating tool main body is attached to the lower hook block of an existing electric chain block, it can be directly attached without removing the lower hook block from the road chain. It can be done.

(Example) Hereinafter, an example of an operating tool for an electric chain block according to the present invention will be described based on the drawings.

First, FIG. 7 shows an example of an electric chain block equipped with the operating tool of the present invention. In the figure, 1 is a chain block main body, and the main body 1 has a pair of base plates 11 and 12 facing each other at a predetermined distance. The load sheave 13 is rotatably supported between the base plates 11 and 12, and the motor 14 for driving the load sheave 13 is provided on the outside of the base plate 11 on one side of the base plates 11 and 12, and the motor 14 for driving the load sheave 13 is provided on the outside of the base plate 11 on one side, and 12
A reduction gear mechanism (not shown) that transmits the driving force from the motor 14 to the load sheave 13 on the outside of the
The main body 1 is provided with a gearbox 15 that houses the gearbox 15, and an electrical box 16 that houses electrical components (not shown) is disposed outside the gearbox 15 in the main body 1.

A load chain 17 is suspended from the load sheave 13, and a lower hook 18 is rotatably attached to the load-side free end of the chain 17 hanging from the main body 1 via a lower hook block 19. Further, an operating tool for controlling the operation of the motor 14 is connected to the motor 14 via the cord 7, and the operation of the operating tool drives the motor 14 in forward and reverse directions, thereby controlling the lower hook 18. It is designed to wind up and lower down.

Note that 10 is a base plate 11, 1 above the load sheave 13 of the chain block main body 1.
This is a hanging device attached between the two.

Therefore, the present invention provides an operating tool for the electric chain block constructed as described above, which includes a pair of divided block pieces 3, which are divided along the length direction of the road chain 13 and whose divided surfaces can be joined. The operating tool main body 2 is formed by connecting the divided block pieces 3 and 4 with the split surfaces joined together so as to be separable by the connecting means 5, and one of the divided block pieces in the operating tool main body 2 is An operation switch 6 for driving and controlling the drive motor 14 is provided on the piece 3.
and an operation handle 34 which is located at a position apart from the operation switch 6 and controls the lateral movement of the lower hook, and each of the block pieces 3,
4 are provided with semicircular through holes 31, 41 that open outward and engaging recesses 32, 42 that communicate with these through holes 31, 41, and these engaging recesses 32, 42 forms an engaging portion 20 that holds the lower hook block 18 when the block pieces 3 and 4 are connected.

Specifically, as shown in FIGS. 1 to 6, the operating tool main body 2 is formed from a pair of vertically divided block pieces 3 and 4, and at the upper center of the split surface of these block pieces 3 and 4, Semicircular through holes 31, 41 for inserting the load chain 17, and engaging recesses 32, 42, which communicate with the through holes 31, 41 and hold the lower hook block 18, are provided at the lower part of the cut surface, respectively. The lower hook block 19 is inserted into one block piece 3, and the load chain 17 is inserted into the lower hook block 19.
After positioning the other block piece 4 in the through hole 31, the other block piece 4 is assembled so as to be joined to the split side of the block piece 3, and the engaging part 20 consisting of the engaging recesses 32 and 42 While holding the lower hook block 19, both ends of both block pieces 3 and 4 are fixed by connecting means 5 such as screws.

A frame-shaped operating handle 34 having an opening 33 in the center is integrally formed on the outer side of one of the block pieces 3 and 4, while a frame-shaped operating handle 34 having an opening 33 in the center is integrally formed on the outer side of one of the blocking pieces 3, and on the other hand, both ends of the operating handle 34 are Mounting parts 35, 35 of the operation switches 6, 6 are formed nearby,
Push-button operation switches 6, 6 for controlling the operation of the motor are attached to the mounting parts 35, 35, respectively, so that whether the operating handle is grasped with either the left or the right hand, the operating handle 34 can be pressed with either hand. The operation switch 6 is configured so that it can be operated with the thumb, and a cavity 36 is formed in the middle part of the through hole 31, and the cavity 36 and the mounting parts 35, 35 are connected to each other.
are communicated with each other through communication holes 37, 37.

Further, the side portion of the other block piece 4 is made to protrude outward to balance both block pieces 3 and 4, and a through hole 43 is formed which penetrates outward from a position corresponding to the cavity 36.

Then, the lower end of the cord 7 is connected to the operating switches 6, 6 via the through hole 43, the cavity 36, and the communication holes 37, 37, and the cord 7
The intermediate portion of the coil is wound spirally with a coil inner diameter larger than the outer diameter of the road chain 17, and this winding portion 71 is loosely fitted around the outer periphery of the chain 17. Reference numerals 38 and 44 are cylindrical protrusions integrally formed on the upper parts of the block pieces 3 and 4, and the winding portion 7 of the cord 7 is formed on the outer periphery of the protrusions 38 and 44.
1 and sends the code 7 to the road chain 17.
is positioned substantially concentrically with respect to the center of the road chain 17 to prevent entanglement with the road chain 17.

In FIG. 1, reference numeral 8 denotes a pipe-shaped overwinding prevention member provided at the upper part of the operating tool main body 2, and when the lower hook 18 is hoisted by the preventing member 8, the operating tool main body 2 is This is to prevent contact with 1.

The operating tool for the electric chain block according to the present invention has the above-mentioned configuration, and when one person uses the operating tool to assemble the upper mold into the lower mold, for example, the operator uses one hand to assemble the upper mold into the lower mold. While gripping the operating handle 34 of the operating tool main body 2 and holding the upper part of the lower hook 18 or the upper mold with the other hand, press the handle 34.
All you have to do is operate the operation switch 6 with your open hand. This allows one person to operate the switch to wind up and lower the lower hook 18 while using both hands to prevent the lower hook 18, that is, the upper die, from moving laterally or swinging, and the upper die fits well with the lower die. It is possible to guide the aircraft so that it descends accurately.

In the embodiment described above, the operating tool is attached to the lower hook 1.
Although the operating tool main body 2 may be attached directly to the upper part of the lower hook 18 in a lower hook 19 which does not have the lower hook block 19, the operating tool body 2 may be attached directly to the upper part of the lower hook 18.

Further, the operating handle 34 may be provided not only horizontally on the operating tool main body 2 but also perpendicularly to the operating tool main body 2. In this case, it is preferable to provide the operating switch 6 above the operating handle. Further, as the through holes 31 and 41, both block pieces 3 and 4 are used.
Although a through hole having a circular cross section is formed during assembly, a through hole having a cross cross section may also be formed.

Furthermore, in the embodiment described above, connecting devices may be provided at the lower end of the cord 5 and the operating tool main body 2, respectively, so that the cord 5 can be removed from the operating tool main body 2.

(Effects of the invention) As described above, the present invention consists of a pair of split block pieces that are divided along the length of the road chain and whose split surfaces can be joined. An operating tool main body is formed in which split block pieces are separably connected by a coupling means, and an operating switch for controlling the operation of the drive motor is provided on one of the split block pieces of the operating tool main body, and the operating switch is provided with an operating switch for controlling the operation of the drive motor. An operating handle is provided at a remote position to control the lateral movement of the lower hook, and semicircular through holes opening outward are provided in each split surface of each of the block pieces. An engaging recess communicating with the hole is provided, and these engaging recesses form an engaging part that holds the lower hook block when the block pieces are connected.
When loading and unloading using an electric chain block, the operation switch can be operated while holding the operation handle of the operation tool main body and controlling the lateral movement and swing of the lower hook. One person can operate the operating switch and guide the load to a desired position with both hands, and the main body of the operating tool is made up of a pair of divided block pieces each having a dividing surface along the length direction of the load chain. and the respective block pieces are separably joined by a joining means, and
When these block pieces are connected, the operating tool main body can be attached to the lower hook block of an existing electric chain block by forming an engaging part that holds both of the lower hook blocks on the joining surfaces of both block pieces. In this case, the lower hook block can be directly attached without removing it from the load chain.Thereby, the operating tool main body can be easily and quickly attached to the lower hook block. Also, the operation tool main body can be reliably connected to the lower hook block.

Furthermore, since the operating handle is mounted apart from the operating switch provided on the main body of the operating tool, there is no possibility of accidentally operating the operating switch when grasping the operating handle.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway sectional view of the main part showing an embodiment of the operating tool of the present invention, FIG. 2 is a plan view of the operating tool main body, FIG. 3 is a front view of one side block piece of the operating tool main body, and FIG. Figure 4 is a rear view of the same block piece, Figure 5 is a rear view of the other side block, Figure 6 is a front view of the same block piece, and Figure 7 is a front view of the electric chain block equipped with the operating tool of the present invention. be. 13...Load sheave, 14...Drive motor, 17...Load chain, 18...Lower hook,
2... operating tool main body, 20... engaging portion, 34... operating handle, 6, 6... operating switch.

Claims (1)

[Scope of utility model registration request] It consists of a chain block body equipped with a load sheave and a drive motor for driving the load sheave, a load chain suspended from the load sheave, and a lower hook block having a lower hook attached to the lower end of the load sheave. An operating tool for controlling the operation of the drive motor in the electric chain block, which is composed of a pair of split block pieces that are split along the length of the road chain and whose split surfaces can be joined. An operation of forming an operating tool main body in which each of these divided block pieces having their cut surfaces joined together so as to be separable by a coupling means, and controlling the operation of the driving motor on one of the split block pieces in the operating tool main body. A switch and an operating handle located apart from the operating switch to control the lateral movement of the lower hook are provided, and each split surface of each of the block pieces is provided with a semicircle that opens outward. A shaped through hole and an engaging recess communicating with the through hole are provided, and the engaging recess forms an engaging portion that holds the lower hook block when the block pieces are combined. An operating tool for an electric chain block.